scholarly journals Natural and anthropogenic sounds reduce song performance: insights from two emberizid species

2017 ◽  
Vol 28 (4) ◽  
pp. 974-982 ◽  
Author(s):  
Benjamin M Davidson ◽  
Gabriela Antonova ◽  
Haven Dlott ◽  
Jesse R Barber ◽  
Clinton D Francis
Keyword(s):  
2011 ◽  
Vol 26 (1) ◽  
pp. 21-28 ◽  
Author(s):  
W.T. ELLISON ◽  
B.L. SOUTHALL ◽  
C.W. CLARK ◽  
A.S. FRANKEL

2016 ◽  
Vol 140 (4) ◽  
pp. 3072-3073 ◽  
Author(s):  
David E. Hannay ◽  
Marie-Noel Matthews ◽  
Angela Schlesinger ◽  
Leila Hatch ◽  
Jolie Harrison

2010 ◽  
Vol 6 (4) ◽  
pp. 458-461 ◽  
Author(s):  
Alvin Aaden Yim-Hol Chan ◽  
Paulina Giraldo-Perez ◽  
Sonja Smith ◽  
Daniel T. Blumstein

Many studies have focused on the effects of anthropogenic noise on animal communication, but only a few have looked at its effect on other behavioural systems. We designed a playback experiment to test the effect of noise on predation risk assessment. We found that in response to boat motor playback, Caribbean hermit crabs ( Coenobita clypeatus ) allowed a simulated predator to approach closer before they hid. Two hypotheses may explain how boat noise affected risk assessment: it masked an approaching predator's sound; and/or it reallocated some of the crabs' finite attention, effectively distracting them, and thus preventing them from responding to an approaching threat. We found no support for the first hypothesis: a silent looming object still got closer during boat motor playbacks than during silence. However, we found support for the attentional hypothesis: when we added flashing lights to the boat motor noise to further distract the hermit crabs, we were able to approach the crabs more closely than with the noise alone. Anthropogenic sounds may thus distract prey and make them more vulnerable to predation.


2021 ◽  
Vol 44 ◽  
pp. 177-195
Author(s):  
Andrea Ednie ◽  
Trace Gale

This study explores how existing connections to natural places may affect PA visitors’ experiences and perceptions within the PA. Specifically, outside-the-PA soundscape perceptions are examined to better understand how their experiences outside the PA may affect perceptions of PA soundscapes and visitors’ ability to effectively contribute to conservation monitoring. Survey research (n=389) of recent urban visitors to the Chilean Coyhaique National Reserve (CNR) in Patagonia unpacked perceptions of the acoustic environments within the places where participants felt most connected to nature, including landscape features, favorite and prevalent sounds, and acceptability of particular anthrophonic sounds. Favorite and prevalent sounds were open-coded, and anthrophonic sounds were rated for prevalence and acceptability. The mountain landscape features and sounds (‘wind’, ‘running water’,‘ birds’) participants described as prominent within the places where they felt most connected to nature aligned well with CNR characteristics. Participants who ‘sometimes’‘/often’ heard certain anthropogenic sounds (vehicles, aircraft, machines, city sounds), within the places where they felt most connected to nature, rated those sounds as more acceptable than participants who reported ‘never’ hearing them, raising concerns about complacency toward anthrophony in natural settings. Continued research efforts are warranted to better understand visitors’ frames of reference, their influence on the reliability of social norm data for PA soundscape monitoring, and their influence on PA managers’ ability to protect conservation values.


2003 ◽  
Vol 37 (4) ◽  
pp. 35-40 ◽  
Author(s):  
Arthur N. Popper ◽  
Jane Fewtrell ◽  
Michael E. Smith ◽  
Robert D. McCauley

Anthropogenic sound in the marine environment continues to increase. Sound sources range from increased vessel traffic to transient but intense sounds such as those produced by seismic air guns, pile driving, or some sonars. While most interest in anthropogenic sounds has focused on marine mammals, there is an increasing concern regarding the impact of such sounds on fishes and marine invertebrates. Since the inner ear hearing receptors of fishes are similar to those of marine mammals, any effects seen on the hearing receptors of marine mammals may also be found in fishes and vice versa. Despite increasing interest in the effects of sounds on fishes, this issue has only been addressed on the most limited scale. Here we review the current literature in this area. It has been reported that high sound levels can damage the inner ear sensory cells, produce hearing loss (threshold shifts), elicit stress responses, and alter the behavior of fishes. At least in terms of hearing loss, these effects are modulated by exposure sound level and duration. The effects of various types of sound (e.g., impulsive vs. continuous) and long-term impacts of how anthropogenic sounds affect the behavior and ecology of fishes need exploration in the future.


2008 ◽  
Vol 123 (3) ◽  
pp. 1720-1728 ◽  
Author(s):  
Marc O. Lammers ◽  
Russell E. Brainard ◽  
Whitlow W. L. Au ◽  
T. Aran Mooney ◽  
Kevin B. Wong

Bioacoustics ◽  
2008 ◽  
Vol 17 (1-3) ◽  
pp. 214-217 ◽  
Author(s):  
ARTHUR N. POPPER ◽  
SVIEN LØKKEBORG
Keyword(s):  

Author(s):  
Trace Gale ◽  
Andrea Ednie

This research expanded on prior use of visitor perception data to inform potential social indicators of soundscape quality, by integrating existing urban-context soundscapes work, and the emerging use of triggers to help managers identify concerns before they reach the threshold level. Along with existing measures of sound appeal and acceptability, sound dominance helped provide a sense of how the extent of particular sounds influenced visitor experiences and a desire to visit more. Geospatial data collection for 899 visitors and eight sites within the Coyhaique National Reserve (CNR) in southern Chile during the summer high visitation season of 2019, allowed researchers to examine perceptual similarities and differences, facilitating an evaluation of new perceptual variables for soundscape monitoring. Correlation analyses identified informative relationships between the dominance (sound duration and foreground/background placement) of natural and anthropogenic sounds, and overall soundscape ratings. The duration of natural sounds was positively correlated with soundscape-level ratings, while the duration of anthropogenic sounds was negatively correlated with these ratings. Unique trends and relationships were identified across specific sites, demonstrating the value of adding measures of perceived sound dominance to soundscape monitoring processes. Observed Protected Area (PA) visitor enthusiasm for sounds and soundscapes suggests potential for crowd-sourced citizen science-based methods that could be done voluntarily and regularly using simple and accessible applications and technologies.


Sign in / Sign up

Export Citation Format

Share Document